<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <button @click=" list.splice(1,0,{ id: 101, name:'赵六' }) ">添加一个元素到下标1</button>
        <ul>
            <li v-for="(item,index) in list" :key="item.id">
                <input type="text">{{ item.name }}
            </li>
        </ul>
    </div>

    <script src="./vue.js"></script>

    <script>
        new Vue({
            el: '#app',
            data: {
                list: [
                    { id: 50, name: '张三' },
                    { id: 31, name: '李四' },
                    { id: 10, name: '王五' },
                ]
            }
        })
    </script>
</body>

</html>